NW 278TH St over Roberts Br
Clinton County, Missouri · rated Fair in the 2025 National Bridge Inventory
United States Bridge Conditions2025 National Bridge Inventory, FHWACompiled
- NW 278TH St over Roberts Br in Clinton County, Missouri, is rated in fair condition in the 2025 National Bridge Inventory (as of ).
- Its lowest-rated component is the superstructure, rated 5 (fair condition) on the 0-9 scale.
- It was built in 1986, making it 39 years old at the 2025 inventory.
- It carries about 25 vehicles a day (traffic count year 2023).
- Its listed owner is the county highway agency.
- It is one of 90 of the 153 inventoried bridges in Clinton County rated fair (58.8%); 12 (7.8%) are rated poor.
- A fair rating means the lowest-rated major component scores 5 or 6 on FHWA's 0-9 scale: some deterioration or minor section loss, but the structure is sound. It is the middle class, not a warning.
View this bridge on a map → (39.59803, -94.49033)
Component ratings
| Component | Rating (2025) | FHWA scale meaning |
|---|---|---|
| Deck | 6 | Satisfactory condition |
| Superstructure | 5 | Fair condition |
| Substructure | 7 | Good condition |
Bridge details
| Structure | Steel girder and floorbeam |
| Length | about 42 ft |
| Location | S 9 T 55 N R 32 W |
| NBI structure number | 22188 |
| Condition class | Fair |
Source: FHWA National Bridge Inventory, 2025 data as reported by the Missouri department of transportation.
Busiest bridges in Clinton County
| Bridge | Built | Vehicles/day | Condition |
|---|---|---|---|
| Is 35 S over Crd SE 232ND St | 1964 | 13,299 | Good |
| Is 35 N over Crd SE 232ND St | 1964 | 12,673 | Fair |
| Is 35 S over Shoal CR | 1963 | 11,864 | Good |
| Is 35 S over Brushy CR | 1963 | 11,864 | Fair |
| Is 35 N over Shoal CR | 1963 | 11,659 | Fair |
| Is 35 N over Brushy CR | 1963 | 11,659 | Fair |
All bridges nearby: Clinton County, MO bridge conditions · every bridge in Clinton County · Missouri bridges.
Background: how bridge ratings work · what "poor" and "structurally deficient" actually mean · how often bridges are inspected.